What was found
CAPTAIN REPORTED THAT DURING APPROACH, TRAILING EDGE FLAP DISAGREE, SO FLIGHT CREW ACCOMPLISHED THE QRH 9.28 PROCEDURE. MAINTENANCE PERSONNEL PERFORMED BITE TO FSEU IAW FIM 27-51 TASK 836 PROCEDURE, SHOWING FAILURE CODES 27-52260; SO THE FIM 27-51 TASK 820 AND TE FLAP SNSR INTERMITTENT FAULT SYSTEM TEST WERE PERFORMED, NO CONFIRMING THE FAILURE. AT MEX, AS A PRECAUTIONARY ACTION, THE FLAPS POSITION TRANSMITTER T428 WAS REPLACED IAW AMM 27-58-01, TESTED CORRECT.